Weather on March 21
San Leandro, CA
55 Years of Data
Avg High
64°F
Avg Low
46°F
Warmest
2008
125°F avg
Coldest
1995
27°F avg
About This Date
March 21st in San Leandro, CA typically brings mild spring weather, with average highs around 64°F and lows near 46°F. Over 53 years of records, the warmest March 21st was in 2008 (125°F average), while the coldest was 1995 (27°F) — a 98°F range across recorded history. Rain or other precipitation has occurred on about 13% of March 21st dates historically, with the wettest March 21st recording 2.11" of rain. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in San Leandro, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 76° | 61° | 68° | — | — |
| 2025 | 62° | 42° | 52° | — | — |
| 2024 | 64° | 47° | 55° | — | — |
| 2023 | 51° | 40° | 45° | — | — |
| 2022 | 69° | 45° | 57° | — | — |
| 2021 | 64° | 41° | 53° | — | — |
| 2020 | 59° | 46° | 53° | — | — |
| 2019 | 59° | 44° | 52° | — | — |
| 2018 | 60° | 50° | 55° | — | — |
| 2017 | 61° | 51° | 56° | — | — |
| 2016 | 54° | 46° | 50° | — | — |
| 2015 | 67° | 51° | 59° | — | — |
| 2014 | 62° | 44° | 53° | — | — |
| 2013 | 62° | 38° | 50° | — | — |
| 2012 | 66° | 47° | 56° | — | — |
| 2011 | 51° | 42° | 47° | — | — |
| 2010 | 65° | 45° | 55° | — | — |
| 2009 | 60° | 50° | 55° | 0.15" | — |
| 2008warmest | 131° | 118° | 125° | — | — |
| 2007 | 68° | 40° | 54° | — | — |
| 2006 | 56° | 39° | 47° | — | — |
| 2005 | 63° | 50° | 56° | 1.07" | — |
| 2004 | 68° | 49° | 58° | — | — |
| 2003 | 63° | 43° | 53° | — | — |
| 2002 | 64° | 47° | 55° | — | — |
| 2001 | 63° | 49° | 56° | — | — |
| 2000 | 71° | 52° | 61° | — | — |
| 1999 | 59° | 46° | 53° | — | — |
| 1998 | 59° | 51° | 55° | — | — |
| 1997 | 74° | 62° | 68° | — | — |
| 1996 | 58° | 48° | 53° | — | — |
| 1995coldest | 54° | 1° | 27° | — | — |
| 1994 | 58° | 43° | 50° | — | — |
| 1993 | 63° | 48° | 55° | — | — |
| 1990 | 73° | 46° | 60° | — | — |
| 1989 | 74° | 47° | 60° | — | — |
| 1987 | 60° | 40° | 50° | 0.99" | — |
| 1986 | 76° | 46° | 61° | — | — |
| 1985 | 65° | 40° | 52° | — | — |
| 1984 | 72° | 43° | 57° | — | — |
| 1983 | 56° | 42° | 49° | 2.11" | — |
| 1982 | 60° | 38° | 49° | — | — |
| 1981 | 54° | 44° | 49° | 2.01" | — |
| 1980 | 59° | 41° | 50° | 0.1" | — |
| 1979 | 62° | 47° | 54° | — | — |
| 1978 | 70° | 50° | 60° | — | — |
| 1977 | 67° | 45° | 56° | — | — |
| 1976 | 65° | 36° | 50° | — | — |
| 1975 | 56° | 36° | 46° | — | — |
| 1974 | 63° | 42° | 52° | — | — |
| 1973 | 54° | 40° | 47° | 0.33" | — |
| 1972 | 61° | 46° | 53° | — | — |
| 1971 | 74° | 44° | 59° | — | — |
53 years of data from UPPER SAN LEANDRO FILTERS